Which of the following is a nucleotide found in DNA?

What does the digestive, respiratory,and excrtory systems have in common?

son4ous [18]

Blood vessels are part of the circulatory system. The highway system of the Human Body that Transports materials to all of its Cells

Your brain is telling the systems to work together and your heart lets blood pump through your body and it helps ur muscles and all the other systems move around.

7 0

4 years ago

Is it possible for plant breeders to develop a true-breeding pink-flowered snapdragon?

abruzzese [7]

Answer:

No.

Explanation:

Pink flower colour in snapdragon is as a result of incomplete dominance. The pink flower colour has no allele in nature. Instead, the pink colour results from incomplete dominance of the allele that codes for red flower colour over the allele that codes for the white flower colour.

Assuming that the allele for red flower colour in the plant is R and the allele for white flower colour is r, true breeding red and white flower colour plants will have the genotype RR and rr respectively. In heterozygote state (Rr), the phenotype is usually pink, showing that the R allele has incomplete dominance over the r allele.

<em>Hence, there is no way for plant breeders to develop a true-breeding pink-flowered snapdragon. without some genetic manipulations/mutation.</em>

6 0

3 years ago

Help pls I'll give BRAINLEST

kompoz [17]

<h2>ANSWER:</h2>

$\huge\boxed{Negative Feedback}$

<h2>_____________________________________</h2><h2>TYPES OF MECHANISMS</h2>

There are two types of mechanisms

<h3>Negative Feedback Mechanism:</h3>

This mechanism opposes the change that occurs in the body resulting in the decrease of the CHANGE.

<h3>Positive Feedback Mechanism:</h3>

This mechanism enhances the change that occurs in the body resulting in the increase of the CHANGE.

<h2>_____________________________________</h2><h2>THERMOREGULATION</h2>

Thermoregulation is the control of body temperature

<h3>__________________________________________________</h3><h3>Decrease in temperature </h3>

This picture is the mechanism for the THERMOREGULATION (control of the body temperature). It is the negative feedback, as you can see if the temperature is decreased that means the change occurs, so the process of shivering starts which is the movement of muscles which generates the heat resulting in the increase in temperature.

CHANGE: Less Temperature i.e. body cold.

NEGATIVE FEEDBACK: Increases temperature and brings it back to normal.

<h3>__________________________________________________</h3><h3>Increase in temperature </h3>

When the Temperature of the body increases, that means when the change occurs, The Negative feedback mechanism is triggered resulting in the process of sweating which brings the body temperature down.

CHANGE: More Temperature i.e. Body hot

NEGATIVE FEEDBACK: Decreases the temperature by the process of sweating and brings it back to normal.

Best Regards,

"BORZ"

7 0

3 years ago

In the twentieth century, the study of heredity took

Marizza181 [45]

DNA is the material that makes up genes.

The term DNA means Deoxyribonucleic acid. It has been found to be the hereditary material that is found in genes.

DNA is comprised of a double helix of complimentary amino acids arranged in specific sequences.

These specific arrangements of amino acids encode genetic information found in genes. This genetic information is replicated during cell division.

Learn more: brainly.com/question/264225

4 0

2 years ago

Umm.. What is the answer then please help

mr Goodwill [35]

Answer:

The correct answer is D.

Explanation:

Erosion often blows away the topmost soil so plow the topsoil often.

5 0

3 years ago